“I think its safe to say that the single most important element
that brought Linux to fame is that of the GPL, as there are several
other stable and equally feature-intense operating systems on the
market today that offer equal if not slightly increased
functionality yet unfortunately have closed-source licenses.”
“Apple’s modern operating system will boast many features worth
waiting for. A BSD Unix core allowing (finally) a command line
interface (optional), preemptive multitasking and multithreading,
as well as several additional interface enhancements…”
“… but the single most important facet of Apple’s next
generation operating system isn’t all these features, but
rather, it’s that of Apple’s Public Source License which offers
Mac OS X the same advantages that brought Linux to the spot it
currently holds today.”